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Re: Screen goes black
It's an LCD so the problem is most likely the back-light inverter board. Take a flashlight and shine it directly into the screen from the front. Can you see the image on the screen now? If the image is there but you can't see it without the flashlight than the inverter board needs to be replaced. This is a VERY common problem. Good Luck and let me know what happens, His Dudeness
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Your problems describe a bad Power Inverter. It's a small circuit bard inside the monitor, it powers the CCFL lamp of your monitor. Could be cheap to replace, but in most cases you just buy a new one. It could also be a bad CCFL lamp.
Turn on the computer and complete the following steps:
Step 1: Check cable connections
(If you can see the initial HP or Compaq logo screen but later lose the picture, you can skip to Step 2.)
check the video cable connection on the back of the computer and on the monitor. Make sure that it is connected properly and the connecting screws are tight. Turn the monitor off and then back on again (while the computer is on) to see if an image appears.
Some Flat Panel monitors have two similar power input connections placed side-by-side on the back of the monitor, which sometimes allows them to get confused for one another.
One connector is used to supply power to the speakers with a separate power cord, while the other connector is used for the monitor's power adapter.
Ensure that you have the monitor's power adapter cord plugged into the power connector and not the speaker connector.
After you have reconnected the power cord, turn on the monitor (while the computer is on) to see if an image appears. If there is still no image, continue to the next Step.
Step 2: Resetting the monitor
At first setup, or under certain signal conditions, the monitor may not be able to switch to a new display resolution. Do NOT shut down or restart the computer. Instead, perform the following steps:
Turn off the monitor using the Power button on the front.
If the Power button does not respond, unplug the power cord from the back of monitor and wait five seconds.
Plug the power cord back in.
You should see the image from the computer on the screen.